Electric conductor.



PATENTBD NOV. 24, 1903.

A. E. LYTLE. ELECTRIC CONDUCTGR. APPLIGATION FILED Ammo, 1901. EBNEWLD ooT.1. 1903.

NO MODEL.

THE Noms PETERS co, morouruo., WASHINGTON, 0.1:.

NTTn TnTns Patented November 24, 1903.

PnTnivT Trier.

ALBERT E. LYTLE, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALE TO i HERCULES F. DOUSMAN, OF CHICAGO, ILLINOIS.

ELECTRIC CONDUCTOR.

SPECIFICATION forming part of Letters Patent No. 744,926, dated November 24, 1903.

Application filed April 20,1901. Renewed October l, 1903. Serial No. 175.323. (No model.)

To a/ZZ whom it may concern:

Beit known that I, ALBERT E. LYTLE, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Electric Conductors, of which the following is a specification.

This invention relates to improvements in that class of conductors known as trolleywires, used in electric-railway systems; and

it consists in certain novel features of the construction and arrangement of the parts thereof, as will be hereinafter more fully set forth and specilically claimed.

The principal object of the invention is to provide simple and efficient means for connecting or coupling sections of the conductor together.

In order to enable others skilled in the art to which my invention pertains to make and use the same, I will now proceed to describe it, referring tothe accompanying drawings, in which- Figure l is a perspective View of a portion ofan electric conductor embodying Inyinvention, showing the two sections thereof coupled together and supported on a cross-wire by means of an insulator. Fig. 2 is an enlarged plan view in elevation of two sections of the conductor coupled together; and Fig. 3 is a view in side elevation thereof, partly in section.

Similar letters refer to like parts throughout the dierent views of the drawings.

A and A represent two sections of the conductor, which are made hollow and of copper or other suitable electric conducting material. The adjacent ends of the sections A and A are provided internally with right and left screw-threads a and a','respectively, to engage suitably-formed screw-threads b and b' on the ends of the coupling-piece B, which unites the sections, as is shown in the drawings. The coupling Bis preferably hollow and has its extremities reduced and screwthreaded, as above stated, and is formed at the inner ends of the screwthreads with shoulders c, against which the adjacent ends of the conductors will abut, thus forming a close joint and substantially a continuous piece or conductor. When the sections of the conductor are screwed on the reduced and screw-threaded portions of the coupling, the intermediate portion of which is preferably of the same size as that of the sections, it is apparent that a smooth and substantially unbroken hollow conductor is provided. The coupling B is formed at aboutits middle with an extension B', the free portion of which is externally screw-threaded to engage an insulator C, which may be of the ordinary or any preferred construction and may be supported by means of a cross-wire D or otherwise. To save material and also lessen the weight of the coupling,as well as to obtain better conductive effect, the extension B and conductor B are preferably made hollow, andthe hollow of the extension preferably communicates with the hollow coupling. However, I may sometimes make them of solid material or may make the coupling hollow and the extension solid or the extension hollow and the coupling solid without departing from the spirit of my invention. Where sections of the conductor are to bejoined together and it is not desired to support them at their juncture, a coupling without extension B' may be employed, and when such is the case the coupling may be hollow or solid.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

An electric conductor comprising hollow sections provided at their ends to be joined together with internal screw-threads, and a hollow coupling having on its extremities screw-threads to engage those of the sections, and between its extremities an extension having means to engage a support, substantially as described.

ALBERT E. LYTLE.

Witnesses:

CHAs. C. TILLMAN, A. GUsrAFsoN. 

